1/2'' Drive Wheel Protector Impact Socket, 4 pcs Thin Wall Deep Impact Socket Set, Durable Plastic Sleeve Lug Nut Socket, 6 Point, Metric, 17mm,19mm,21mm,22mm Premium CR-MO - Made from drop forged and heat treated chrome molybdenum Steel with color electroplate finish to ensure long usage. Set include - 6 Point,Metric, 1/2-inch Dirve: 17mm,19mm,21mm,22mm. Strong Yet Protective - 360° Non-scratch Nylon sleeve and insert protect bolt tops, wheel rims and lug nuts, to prevent scratches during use. Laser etching - Non-Marring, Color-Coded, Thin-Walled Wheel Rim Protectors and Laser etched. Service Guarantee - All Tools meet or exceed ANSI performance standards. 1/2 drive, Blue 17 mm, Yellow 19 mm Red 21 mm Green 22 mm Total length 85 mm with plastic tube x 4 pcs Part No. 00-304 (oro2u.com)